Tjernlund Products FC24 Fan Center

The Tjernlund Products FC24 Fan Center is a specialized 24V fan control center designed for field-integration of AireShare AS1 and AS2 transfer fans with standard environmental controls. As a veteran-grade HVAC relay and transformer assembly, the FC24 allows a dedicated 24 volt thermostat to manage room-to-room air transfer, enabling precise temperature-based activation. This module eliminates the need for manual wall switches by providing a low-voltage interface that fits directly within the AS1 or AS2 electrical junction box. It facilitates multi-mode operation including "Heat," "Cool," and "Fan" constant-run settings, provided the appropriate jumpers are installed at the thermostat base. Rigged for professionals requiring a clean, low-voltage fan control solution, this unit ensures the transfer fan only operates when there is a call for air movement, optimizing energy efficiency and system performance across divided zones.

• Universal Thermostat Integration: Seamlessly bridges 24 VAC thermostats with line-voltage AireShare transfer fans for automated climate control.
• Compact Form Factor: Engineered specifically to fit inside existing AS1 and AS2 junction boxes, ensuring a streamlined, professional installation.
• Built-In Relay & Transformer: Consolidates the 24V transformer and switching relay into a single module, reducing field wiring complexity.
• Versatile Control Logic: Supports temperature-rise or temperature-fall activation, allowing for customized heating and cooling distribution.

Is the FC24 required for all AireShare fans?
No, it is only necessary if you intend to control the AS1 or AS2 fans via a low-voltage 24V thermostat rather than the standard line-voltage manual switch.

Does this unit come with the necessary wiring for 3-speed control?
The FC24 provides the interface for thermostat control; however, 3-speed operation on the AS2 model typically requires specific wiring configurations at the equipment or an additional selector switch.

Can I use this with a smart thermostat?
Yes, as long as the thermostat provides a standard 24V signal. Note that some digital thermostats may require a jumper between the W, Y, and G terminals to ensure the fan runs in all modes.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.